The larger data type than unsigned long is unsigned long long, which is generally used to represent 64-bit integer variables, and is generally typedef to __uint64 in vc development environment.

The range of long long type is:-9223372036854775808 ~ 9223372065475807.

If only positive numbers are used, consider using unsigned long long. The range is: 0 ~1844674073709551615.

If you need a larger number, you can consider using an array to store it.

Reference large number operation

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Examples of definitions are as follows

//vc for //windows？ /vs development environment

__int64？ Me? =? 0;

//linux？ In the gcc/g++ compilation environment.

Not signed? Dragon? Dragon? Me? =? 0